"Both rough and insane" is false advertising. Too much ammo makes it much too easy and therefore boring. I gave up in the room filled with battery packs that has yet another invincibility and yet another soulsphere.

These levels are vintage 1994, but from 1999. They're initially gratifying, because there's a massive amount of health and ammo, and it's just a constant slaughter of enemies. But after three or four levels it gets very dull. The design work and textures etc are straight out of 1994/1995.